Dook-latch



UNITED sTATEs PATENT oEEIoE.

THOMAS SLAIGHT, OF NEWARK, NEW JERSEY.

DOOR-LATCH.

Specication of Letters Patent No.

To all whom t may concern:

Be it known that I, THOMAS SLAIGHT, of Newark, in the county of Essex and State of New Jersey, have invented a new and useful Improvement in Slide-Latches for Doors; and I do hereby declare that the following is a full, clear, and exact description of the same, reference being had to the annexed drawings, making a part of this specification, in which- Figure l is a front sectional view of a latch constructed according to my invention. Fig. 2 is an end view of the same. Fig. 3 is a horizontal section of the same taken in the line af, Fig. l.

Similar letters of reference indicate corresponding parts in the several figures.

The object of this invention is to facilitate the operation of the slide so that the same may, when its outer end comes in contact with the nosing on shutting the door, be readily forced back into its case; due provision being' also made for the shrinking of the door and jamb, so that all play of the former will be avoided in consequence of any shrinkage of the parts aforesaid.

'l`o enable those skilled in the art to fully understand and construct my invention I will proceed to describe it.

t represents the case of a door latch; B the slide latch placed therein, and having a hub C, and spring D, connected with it, the spring being connected with the slide through the medium of a lever E, as shown clearly in Fig. l. These parts may be arranged in the usual way, and therefore do not require a particular description.

rEhe outer end a, of the slide B, has its back side beveled, as shown at I), and the end o, is secured in a segment F, the back end of which is attached by a pivot c, at the back edge of the end piece CZ, of the case A.

The outer surface of the segment F, has a plane surface oblique with the face of the end piece CZ, as shown clearly in Fig. 3, and the end e, of the slide B, projects a little beyond the segment F, as shown in Fig. 3.

The end a, of the slide B, is secured in the segment F, by a pivot e, and as said seg- 30,594, dated November 6, 1860.

ment may be 0f considerable length in consequence of being connected at the back edge of the end piece (l, a very slight bevel is obtained so that the slide will be readily forced inward when' the segment comes in contact with the nosing on the door jamb, the nosing being shown in red in Figs. l and 3.

The front edge of the segment F, being of curved form, a portion of a cylinder, of which the pivot c, is the center, it will be seen that if the door or jamb shrinks a space will be left between the end piece and the nosing, and consequently there would be a play allowed between the end of the segment and the nosing, but as the end a, of the slide is fitted in the segment F, no pla)v will be allowed, as the front side of the end a, is a plane surface, parallel with the frontof the case. The end a, therefore of the slide performs an important. function preventing any rattling of the door consequent on a shrinking of the door and jamb, and a play of the segment in the nosing. The segment F, in itself, simply connected to the slide, is an improvement as it admits of the very ready forcing in of the slide B, but the adjusting of the end a., in the segment so that the former may project through the later is advantageous for the reason above stated, and should be employed as a valuable acquisition not involving an appreciable expense.

Having thus described my invention, what claim as new, and desire to secure by Letters Patent, is:

l. The segment F, attached to the end piece CZ, of the case A, and connected to the slide B, essentially as and for the purpose set forth.

2. Having the end a, of the slide B, fitted in the segment F, so as to prevent any play of the latch consequent on a shrinking of the door or jamb, as described.

THOS. SLAIGHT.

lVitnesses M. M. LIVINGSTON, C. W. COWTAN. 

